The sensor terminates at the ADAHRS, with a small 2 pin connector. Last CI I pulled the connector and sprayed with "duster air" aerosol can. I did not use any chemical cleaner, nor did I have a small/micro pin cleaner or brush. Sometimes just unplugging & reconnecting will restore the connection. Its back in the tailcone, mounted on the overhead, no fun to access.
It became worse on a recent flight, and now the plane is getting it annual exam. Any suggestions on cleaning these micro pins?, they are not standard d sub pins.